/*
 * NeutralModel.java
 *
 * Copyright (C) 2002-2006 Alexei Drummond and Andrew Rambaut
 *
 * This file is part of BEAST.
 * See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership and licensing.
 *
 * BEAST is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 *  BEAST is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with BEAST; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301  USA
 */

package dr.evolution.wrightfisher;

/**
 * A fitness function in which all molecular sequences have equal and optimal fitness.
 *
 * @author Alexei Drummond
 */
public class NeutralModel extends FitnessFunction {

	public double getFitness(byte[] sequence) { return 1.0; }

	public double getFitnessFactor(int pos, byte newState, byte oldState) { return 1.0; }
	
	public double[][] getFitnessTable() {
		return null;
	}

	public void initializeToFittest(byte[] genome) {
		for (int i = 0; i < genome.length; i++) {
			genome[i] = 0;
		}
	}

}